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8
TEST POINTS
8.1
Testing the external power supply (from the welding power
source)
Measure the voltage at contact K13.
The approved value range for the voltage is 37,8 V
AC
±
U
AC
±
46,2 V
AC
8.2
Testing the internal power supply voltages
The following test measurements can be made when the motor is not running.
Connect a voltmeter across the following components (negative to GND) :
Set value
Approved value range
Positive connected to K17:1
+60 V
53 V
DC
±
U
±
65 V
DC
Positive connected to K1:1
+5 V
4,8 V
±
U
±
5,2 V
Positive connected to cathode D206
+12 V
10,5 V
±
U
±
13,5V
Positive connected to anode D207
--12 V
--13,5 V
±
U
±
--10,5V
Positive connected to cathode Z402
+15 A
13 V
±
U
±
16V
Positive connected to cathode Z401
+15 B
13 V
±
U
±
16V
Positive connected to cathode Z403
+15 C
13 V
±
U
±
16V
Positive connected to cathode Z404
+15 D
13 V
±
U
±
16V
Positive connected to cathode Z1
+12 V
switch
11 V
±
U
±
13V
GB